Determination and momentum (unstoppable) fits gravity. You could change light to gravity or fire to gravity.
I don't see a real use of doing another bioluminiscence card...
And why the divide is not diagonally here?
It's an art attempt with a different style for duality. I personally like it, so I will be using this style alongside the other one for Duality (it gives the art an upredictable feeling - which style will I use next?) .
That being said, after a bit of self-debate, this card will become

/

because it is more thematically fit and

already has too much quanta generation. Thanks for the suggestion.